/**
 * Copyright (c) 2015-2017
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.oschina.j2cache.util;

import java.io.IOException;

import org.xerial.snappy.Snappy;

/**
 * 在 @FSTSerializer 的基础上增加 snappy ，也就是压缩
 */
public class FstSnappySerializer implements Serializer {

    private final Serializer inner;

    public FstSnappySerializer() {
        this(new FSTSerializer());
    }

    public FstSnappySerializer(Serializer innerSerializer) {
        this.inner = innerSerializer;
    }


    @Override
    public String name() {
        return "fst-snappy";
    }

    @Override
    public byte[] serialize(Object obj) throws IOException {
        return Snappy.compress(inner.serialize(obj));
    }

    @Override
    public Object deserialize(byte[] bytes) throws IOException {
        if (bytes == null || bytes.length == 0)
            return null;
        return inner.deserialize(Snappy.uncompress(bytes));
    }
}
